Compound Interest Calculator

Our compound interest calculator can be used to project the future value of an investment or term deposit. If you'd like to add to your investment during the term it can accommodate that too, so it's a great tool if you are trying to calculate how much you could save in X number of years.

Fields:

• Initial Investment - The amount of money you will be putting in on day one.
• Interest Rate - The interest rate you will earn on your principal.
• Regular Investment - The amount you will be adding monthly, quarterly or annually. This will begin to be added after the first period has ended. For instance, if you choose "Monthly", the first regular deposit will be added in month two. If you choose "Annually" the first regular deposit will be added in month 13 (The start of year Two).
• Years - The number of years before you withdraw your money.
• Compounded - The frequency at which your interest will be compounded. If you are unsure then leave this set to "Annually". N.B. "Daily" compounding does not currently account for leap years so will be very slightly off on longer terms.

Calculation Results

Final Value

This first section of the results shows you the final value of your investment and breaks that value down into the initial investment, regular deposits and the interest that you earned on your money.

Growth Chart

This chart shows the growth of your money over the entered term. The dark blue layer on the bottom is your initial deposit, the light blue layer above is your regular deposits and the grey layer at the top is the interest you will earn.

Investment Breakdown

This section has two tabs for yearly and monthly breakdowns. Each row in the table shows the position of your investment at the end of the year or month after regular investments have been added and interest applied.